TW201324817A - Concentrator solar cell module, photovoltaic power generation system, and manufacturing method for concentrator solar cell module - Google Patents

Abstract

A concentrator solar cell module is provided with: an elongated receiver substrate (11) having a plurality of solar cell elements (60) arranged thereon in a single line at predetermined intervals (W1); and a module substrate (10) having a plurality of the receiver substrates (11) arranged thereon in parallel at the predetermined intervals (W1). The receiver substrates (11) each comprise an elongated receiver base and a plurality of sections of a wiring member (13) arranged upon the receiver base in a single line along the lengthwise direction so that the adjacent ends face each other. A positive electrode pad is provided to one end of each section of the wiring member (13) and a negative electrode pad is provided to the other end. The positive electrode terminals of the solar cell elements (60) are connected to the positive electrode pads, and the negative electrode terminals of the solar cell elements (60) are connected to the negative electrode pads.

Description

Collecting type solar cell module, solar photovoltaic power generation system and method for manufacturing concentrating solar cell module

The present invention relates to a concentrating solar cell module and a method of manufacturing the solar photovoltaic power generation system and the concentrating solar cell module.

One of the prior light collecting type solar battery modules is exemplified in FIGS. 11 to 13 (for example, refer to Patent Document 1). 11 is a plan view showing an example of a wiring structure of a module substrate in the prior solar cell module, FIG. 12 is a cross-sectional view taken along line G-G of FIG. 11, and FIG. 13 is a cross-sectional view of the concentrating solar cell.

The concentrating solar cell module is configured in advance in a state in which the wiring material 124 between the solar cell elements is covered by the insulating film 125 on the module substrate 120a, and is merely uncovered as a configuration set. The state in which the wiring portions 121a and 121b of the connection portion of the solar cell 110 are exposed is provided. Moreover, in order to electrically insulate the wiring material 124 from the module substrate 120a, the insulating sheet 122 is inserted between the module substrate 120a and the wiring material 124.

Further, the exposed heat dissipating portion 123 is disposed at a position sandwiched by the exposed wiring portions 121a and 121b of the module substrate 120a, and the exposed heat dissipating portion 123 is located in the sun when the concentrating solar cell 110 is mounted on the module substrate 120a. Immediately below the battery element 111, in order to release the heat generated by the solar cell element 111 to the outside, it is connected to the heat dissipation plate 118 directly under the solar cell element 111.

Further, the exposed wiring portions 121a and 121b and the exposed heat dissipation portion 123 shown in FIGS. 11 and 12 are connected by reflow soldering, respectively. The terminals 116c and 116d of the concentrating solar cell 110 shown in FIG. 13 and the heat dissipation plate 118 are connected.

After that, although the illustration is omitted, the concentrating solar cell 110 is connected to the module substrate 120a, and the concentrating solar cell 110 and the concentrating solar cell 110 and the module are arranged in a state in which the concentrating solar cell 110 is connected to the module substrate 120a. The space of the connection portion of the substrate 120a is filled with a resin.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-138970

In the concentrating solar cell module described in Patent Document 1, it is necessary to preliminarily lay a plurality of wiring materials 124 for connecting a plurality of concentrating solar cells 110 (i.e., solar cell elements 111) with a predetermined interval. On the group substrate 120a. In other words, it is necessary to perform all the operations such as the wiring step of all the electrodes or the mounting step of the concentrating solar cell on the module substrate 120a having a large size. Therefore, it is necessary to have a wide working space, and there is a problem that work efficiency is poor.

The present invention has been made to solve the above problems, and an object of the invention is to provide a concentrating solar cell module having an electrode wiring structure excellent in workability at the time of manufacture, and a solar photovoltaic system and a concentrating solar cell module. method.

In order to solve the above problems, the concentrating solar cell module of the present invention is characterized by comprising: a plurality of solar cell elements; a long strip receiver substrate; The solar cell elements are placed in a row at a predetermined interval; and the module substrate is formed by placing a plurality of the receiver substrates at a predetermined interval and placing them in parallel; the receiver substrate And comprising: a strip-shaped receiver base; and a plurality of wiring materials, which are arranged on the receiver base such that the ends are opposite to each other and arranged in a row along the length direction; and respectively at one end of the wiring material a positive electrode pad portion is provided, and a negative electrode pad portion is provided at the other end portion, and the positive electrode terminal and the negative electrode terminal of the solar cell element are respectively connected to the positive electrode pad portion and the negative electrode pad portion to form a solar cell element. unit.

According to the configuration described above, since the receiver substrate on which the solar cell element is mounted is mounted on the module substrate, the solar cell element can be electrically connected to the module substrate, so that the solar cell element can be easily formed. Mounting work on the module substrate. Moreover, the heat dissipation effect by heat conduction can be expected by using an integrated receiver substrate.

Moreover, the concentrating solar cell module according to the present invention has a configuration in which a bent portion is formed in a central portion of the wiring material in the longitudinal direction.

By forming the bent portion in this manner, even if the wiring material expands and contracts due to the heat of the sun, the heat of the sun can be absorbed by the bent portion, so that the wiring material is not broken.

Moreover, according to the concentrating solar cell module of the present invention, the receiver base may have a notch formed at a predetermined interval in the longitudinal direction. Thermal expansion can be prevented by forming a notch in the receiver base.

Moreover, according to the concentrating solar cell module of the present invention, the plurality of connections are The receiver substrate can also electrically connect one of the adjacent end portions to each other by the wiring connecting material. In this configuration, the module substrate obtained by connecting the solar cell elements in series can be easily fabricated by simply placing the receiver substrate and the wiring connecting material on the module substrate.

Further, according to the concentrating solar cell module of the present invention, a positioning mechanism for placing the receiver substrate at a specific position of the module substrate may be provided. By providing a positioning mechanism, the receiver substrate can be accurately placed at a specific position on the module substrate.

The positioning mechanism may further include a positioning pin disposed on the module substrate and a positioning hole disposed on the receiver substrate. According to the above configuration, the receiver substrate can be accurately placed at a specific position of the module substrate only by inserting the positioning hole of the receiver base into the positioning pin of the module substrate.

Moreover, according to the concentrating solar cell module of the present invention, a thermally conductive insulating layer may be provided between the receiver substrate and the wiring material. According to the above configuration, not only electrical insulation but also heat generated by energization of the wiring material can be dissipated to the receiver substrate via the insulating layer, and heat can be dissipated from the receiver substrate to the module substrate, thereby preventing the wiring member from being removed. Bending or breaking due to thermal expansion.

Further, according to the concentrating solar cell module of the present invention, the wiring material may be covered by the first insulating protective layer, and the first insulating protective layer may be the positive electrode pad portion and the negative electrode pad of the wiring material. An opening for connection is provided in the upper portion of the portion. By providing the connection opening portion in the upper portion of the positive electrode pad portion and the negative electrode pad portion, the positive electrode terminal can be connected to the positive electrode pad portion by wire bonding or the like. The negative electrode terminal and the negative electrode pad portion of the solar cell element are connected via a connection opening.

Further, according to the concentrating solar cell module of the present invention, the transparent insulating layer is formed on the first insulating protective layer as a whole including the opening for the connection. By providing a transparent second insulating protective layer on the entire first insulating protective layer, the solar cell element or the lead can be reliably protected.

Further, the concentrating solar cell module according to the present invention is preferably configured such that a plurality of light collections for collecting sunlight for each of the solar cell elements are disposed on an upper portion of the module substrate. An optical member of the lens portion. According to the above configuration, by collecting sunlight for each solar cell element by the respective collecting lens portions, a high photoelectric conversion ratio can be realized with a small light receiving area.

Further, the solar power generation system of the present invention is characterized in that a plurality of the concentrating solar battery modules each having the above configuration are disposed on a pedestal, and each solar battery module is connected by a cable.

Moreover, the method of manufacturing a concentrating solar cell module of the present invention includes the steps of: forming a plurality of wiring materials in which a positive electrode pad portion is formed at one end portion and a negative electrode pad portion is formed at the other end portion The positive electrode pad portion faces the negative electrode pad portion, and is placed on the elongated receiver substrate in a row; the positive electrode pad portion and the negative electrode pad portion are respectively connected to the positive electrode terminal of the solar cell element and a negative electrode terminal, wherein the solar cell element is mounted on the positive electrode pad portion to form a receiver substrate; and the plurality of receiver substrates are placed side by side at a predetermined interval and placed on the module base a plurality of ends of the adjacent receiver substrates are electrically connected to each other by a wiring connecting material; and a plurality of sets for collecting sunlight for each of the solar cell elements are disposed on an upper portion of the module substrate The optical member of the optical lens portion is integrally assembled by the frame.

According to the manufacturing method of the present invention, since the solar cell element can be electrically connected to the module substrate by simply mounting the receiver substrate on which the solar cell element is mounted on the module substrate, it is easy to carry out. Manufacturing operations of concentrating solar cell modules.

According to the present invention, only a plurality of receiver substrates in which a plurality of solar cell elements are connected in series are prepared, the receiver substrates are placed side by side on the module substrate, and one of the adjacent end portions is connected to each other by the wiring bonding material. In this way, a concentrating solar cell module in which all solar cell elements are mounted on a receiver substrate can be produced. In other words, it is possible to produce a concentrating solar cell module having an electrode wiring structure excellent in workability at the time of manufacture.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view showing the overall configuration of a concentrating solar cell module of the present invention, and Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1. Figure 3 is an enlarged cross-sectional view of a portion B of Figure 2.

The concentrating solar cell module 1 of the present embodiment generally includes a module substrate 10 on which a plurality of solar cell elements 60 are mounted, and a lens plate (optical member) 30 disposed on the upper portion of the module substrate 10. And including a plurality of collecting lens portions 31 that respectively collect sunlight for each of the solar cell elements 60; The frame 50 is held and integrally supported to surround the entire circumference of the module substrate 10 in a state in which the module substrate 10 and the lens plate 30 are opposed to each other.

The frame 50 may be configured by an upper frame member, a lower frame member, a left frame member, and a right frame member, and the frame members are combined into a square shape, and the abutting portions of the respective corner portions are coupled by screws or the like. In such a structure, since the frame as the solar cell module is a conventionally known general structure, detailed description is omitted.

4 is a plan view of the lens plate 30 viewed from the lower surface side (ie, the side opposite to the solar cell element 60). The collecting lens portion 31 formed in the lens plate 30 is a Fresnel lens in this example, and the Fresnel lens is configured by, for example, eight in the longitudinal direction and five in the lateral direction.

FIG. 5 is a plan view of the module substrate 10 in a state where the lens plate 30 is removed.

In this example, the module substrate 10 has a long-shaped receiver substrate 11 in which eight solar cell elements 60 are placed in a longitudinal direction (longitudinal direction in the drawing) with a predetermined interval W1. Five of them are arranged side by side with a certain interval W1 in the lateral direction, and one end portions of the adjacent receiver substrates 11 are electrically connected to each other by the wiring connecting material 25. In other words, the module substrate 10 in which eight solar cell elements 60 are arranged in the vertical direction and five in the lateral direction are formed, is formed in the direction of the collecting lens unit 31 provided in the lens plate 30. In addition, all of the receiver substrates 11 are connected in series through the wiring connecting material 25, and all of the solar cell elements 60 are connected in series.

Fig. 6(a) is a plan view showing a configuration of one receiver substrate 11, and Fig. 6(b) is a plan view showing a part (one wiring material portion) of Fig. 6(a) enlarged, and Fig. 6(c) A portion (electrode portion) of FIG. 6(b) is further enlarged to represent Fig. 6(d) is a plan view showing an enlarged view of a portion D of Fig. 6(a), and Fig. 6(e) is a plan view showing an enlarged portion E of Fig. 6(a).

The receiver substrate 11 includes: a strip-shaped receiver base 12; and a plurality of (in this example, seven fewer than the number (eight) of solar cell elements 60) wiring material (conductor) 13, which The receiver base 12 is arranged in one row in the longitudinal direction in a state in which the ends are opposed to each other. Further, a thermally conductive insulating layer 18 is provided between the receiver base 12 and the wiring member 13. By providing the thermally conductive insulating layer 18, not only electrical insulation but also heat generated by the energization of the wiring material 13 can be dissipated to the receiver base 12 via the insulating layer 18, and further from the receiver base 12 to the mold. The group substrate 10 dissipates heat, thereby preventing bending or disconnection due to thermal expansion of the wiring member 13.

Here, the receiver base 12 may use any one of a stainless steel plate, a glass plate, a copper plate, an aluminum plate, and an aluminum alloy plate. Further, the insulating layer 18 is composed of a thermally conductive insulating film in which a thermally conductive material (thermally conductive filler) is mixed into a resin. As the resin, an enamel resin, a fluororesin, a polyimide resin, a polyethylene resin, a polyethylene terephthalate (PET) resin, or the like can be used. Further, as the thermally conductive filler of the additive, any one of or a combination of tantalum nitride, aluminum nitride, aluminum oxide, magnesium oxide, boron nitride, cerium oxide, and cerium oxide can be used. Moreover, the wiring material 13 can be a flat copper wire formed by press working a copper plate. Further, the receiver base 12 can be formed by press working similarly to the wiring material 13. However, the formation of the wiring material 13 or the receiver base 12 is not limited to the press working.

One wiring material 13 is positively formed at one end as shown in Fig. 6(b). The pole pad portion 14 is formed with a negative electrode pad portion 15 having a fork-shaped opening at the other end portion. Further, the opposite end portions of the wiring member 13 adjacent in the longitudinal direction are fitted to each other in an insulated state (with a certain interval) by the positive electrode pad portion 14 of a wiring member 13 as shown in Fig. 6(c). The state between the fork-shaped negative electrode pad portions 15 of the other wiring member 13 is opposed to each other.

However, the adjacent wiring material 13 does not exist at the end portion of the wiring material 13 located at both end portions of the receiver substrate 11 (both upper and lower portions in FIG. 6(a)). Therefore, in the end portions, as shown in FIGS. 6(d) and 6(e), the positive electrode pad portion piece 14a and the negative electrode pad portion piece 15a are disposed oppositely. Thereby, the solar cell element 60 can be mounted in advance at the end of the wiring material 13 located at both end portions of the receiver substrate 11.

In the electrode wiring structure, as shown in FIG. 3, the solar cell element 60 is mounted on the positive electrode pad portion 14, and the positive electrode terminal (not shown) on the bottom surface of the solar cell element 60 is connected to the positive electrode by solder or the like. The pad portion 14 is connected to the negative electrode pad portion 15 by the negative electrode terminal (not shown) of the solar cell element 60 via the wire 16 to constitute the solar cell element mounting portion 17. In addition, the entire solar cell element mounting portion 17 is completely covered by the first insulating protective layer 19 and the transparent second insulating protective layer 20. Thereby, the solar cell element 60 and the wires 16 can be reliably protected.

Further, as shown in FIG. 6(b), the wiring member 13 has a substantially semi-arc curved portion 13a formed at a central portion in the longitudinal direction. By forming the curved portion 13a, even if the wiring member 13 expands and contracts due to solar heat, the solar heat can be absorbed by the curved portion 13a, so that the electrode wiring structure of the solar cell element mounting portion 17 is not affected, and the wiring material 13 itself can be prevented. Broken wire or crack Wait.

Further, in the receiver base 12, as shown in FIG. 6(a), a plurality of portions having a certain interval in the longitudinal direction are formed, and a pair of notched portions 12a facing each other in the width direction are formed. The position at which the notch portion 12a is formed coincides with the position of the curved portion 13a of the wiring member 13 in the present embodiment, but it is not necessarily the same. That is, it may be formed at a position slightly shifted in the longitudinal direction. The notch portion 12a formed in the receiver base 12 is provided as a thermal expansion section in the longitudinal direction of the receiver base 12. In other words, the solar cell elements 60 disposed on both end sides of the notch portion 12a are heated by the collected sunlight, and a large thermal stress is applied to the central portion between the adjacent solar cell elements 60 due to the heat generation. The portion 12a is a thermal expansion section in the longitudinal direction to alleviate the thermal stress. That is, the receiver base 12 can be made to absorb thermal expansion.

FIG. 7 shows a case where the receiver substrate 11 is mounted on the module substrate 10.

As shown in FIG. 7, a positioning mechanism is provided between the module substrate 10 and the receiver substrate 11. In the present embodiment, the positioning mechanism includes a positioning pin 10a provided on the module substrate 10 and a positioning hole 12b provided in the receiver base 12 of the receiver substrate 11. The positioning pins 10a are provided in a total of two locations in the vicinity of both ends in the longitudinal direction along the mounting positions of the respective receiver substrates 11 on the module substrate 10, and are provided in a total of ten locations, and the positioning holes 12b are aligned with the positioning pins. The 10a facing mode is provided at two locations near the both ends of the receiver base 12 in the longitudinal direction. According to this configuration, the positioning pins 12b of the two portions facing each other in the longitudinal direction of the receiver base 12 are respectively inserted into the positioning pins 10a of the two portions facing in the longitudinal direction of the module substrate 10. On, but The receiver base 12 (i.e., the receiver substrate 11) is accurately placed at a specific position of the module substrate 10 (the position shown in Fig. 5).

Next, a method of manufacturing the concentrating solar cell module 1 configured as described above will be described.

First, the insulating layer 18 is disposed over the entire surface of the elongated receiver base 12 over the entire length direction. Here, the insulating layer 18 is an insulating film obtained by adding boron nitride (thermal conductive filler) to a polyimide resin.

Next, the seven wiring materials 13 are opposed to each other by the positive electrode pad portion 14 and the negative electrode pad portion 15, and are placed on the insulating layer 18 of the receiver base 12 in one row. At this time, as described above, as shown in FIGS. 6(d) and 6(e), the wiring member 13 at the end portion faces the outer end portion thereof, and the positive electrode pad portion piece 14a or the negative electrode pad is disposed oppositely. Small piece 15a. Further, the first insulating protective layer 19, which is a protective film of a fluorine resist, is covered thereon, and each wiring material 13 is covered. At this time, in the first insulating protective layer 19, as shown in FIG. 8, the positive electrode pad portion 14 (including the positive electrode pad portion piece 14a) and the negative electrode pad portion 15 of the wiring member 13 (also including the negative electrode pad) The upper portion 15a) is provided with connection openings 19a and 19b at the upper portion. That is, the portion in contact with the atmosphere other than the positive electrode pad portion 14 (including the positive electrode pad portion piece 14a) and the negative electrode pad portion 15 (including the negative electrode pad portion piece 15a) is protected.

Thereafter, the receiver substrate 12 on which the insulating layer 18, the wiring member 13, and the first insulating protective layer 19 are sequentially placed is inserted into a laminating apparatus (not shown), and is maintained at a temperature of, for example, 120 ° C while maintaining the pressurized state. Heat treatment. Thereby, the aluminum fineness in which the wiring material 13 is integrally formed is formed by lamination. The receiver substrate 11 is long.

Then, the positive electrode pad portion 14 (including the positive electrode pad portion piece 14a) of the wiring member 13 of the receiver substrate 11 produced in this manner is placed on the connection opening portion 19a, and is mounted thereon. The solar cell element 60 is heated and melted by a reflow furnace, thereby soldering the positive electrode terminal (not shown) on the bottom surface of the solar cell element 60 to the positive electrode pad portion 14 (including the positive electrode pad portion) Small piece 14a).

Next, the negative electrode terminal (not shown) of the solar cell element 60 and the negative electrode pad portion 15 (including the negative electrode pad portion piece 15a) are connected by a wire to be connected by a wire (wire). 16 connections (refer to Figure 3). Thereby, the solar cell element mounting portion 17 is configured.

Further, although not shown, in order to protect the solar cell element 60, the positive electrode pad portion 14 (including the positive electrode pad portion piece 14a) and the negative electrode pad portion 15 (including the negative electrode pad portion piece 15a) A bypass diode is connected in parallel with the solar cell element 60.

Thereafter, the second insulating protective layer 20 is further covered on the first insulating protective layer 19 to cover the entirety, thereby forming the receiver substrate 11 having the electrode structure shown in FIG.

Next, the five receiver substrates 11 fabricated in this manner are placed side by side on the module substrate 10 with a certain interval. In other words, as shown in FIG. 7, the positioning holes 12b of the two portions facing each other in the longitudinal direction of each of the receiver substrates 11 are respectively inserted into the positioning pins of the two portions facing in the longitudinal direction of the module substrate 10. 10a is placed. At this time, the thermal conductivity is applied thinly on the back side of the receiver substrate 11 (that is, the back side of the receiver substrate 12). Next, the receiver substrate 11 is then fixed to a specific position of the module substrate 10, and is fixed by screws, rivets or the like (not shown). Further, for the module substrate 10, a metal material is used based on the strength surface consideration.

Next, as shown in FIG. 9, the positive electrode pad portion piece 14a and the negative electrode pad portion piece 15a of the opposite end portions of the adjacent receiver substrate 11 are connected to each other by a wire connecting material 25 such as a lead wire. Thereby, the module substrate 10 of the electrode wiring structure shown in FIG. 5 is produced.

Next, the lens plate 31 including the collecting lens portion 31 is disposed opposite to the upper portion of the module substrate 10 manufactured in this manner, and is integrally assembled so as to surround the entire circumference thereof with the frame 50, thereby fabricating FIG. 1 and The concentrating solar cell module 1 shown in FIG.

According to the above manufacturing method, only a plurality of receiver substrates 11 on which the solar cell elements 60 are mounted are placed side by side on the module substrate 10, and one end of the adjacent ones of the wiring connecting materials 25 are sequentially connected to each other, thereby being simple. A concentrating solar cell module 1 in which a plurality of solar cell elements 60 are connected in series is manufactured.

Further, as shown in FIG. 10, a plurality of the concentrating solar battery modules 1 are placed on a pedestal 80 having a solar automatic tail function, and the concentrating solar battery modules 1 are connected by a cable (not shown). Thereby, a solar power generation system can be constructed. In this example, the solar power generation system is configured such that a total of 28 concentrating solar cell modules 1 can be placed on the pedestal 80 in a total of four vertical directions and seven horizontal directions.

The solar power generation system is mounted on the trailing drive system 81, and the trailing drive system 81 can drive the light receiving surface to face the sun in accordance with the movement of the sun.

The trailing drive system 81 includes an azimuth axis for making the light receiving surface of the module face toward the sun, and a trailing drive device for separating the two axes of the tilting axis of the module light receiving surface inclined by the height of the sun, thereby accurately Trailing the sun. As a trailing drive system, a system including a 2-axis drive device which is mounted on a tilting axis inclined at a latitude and a longitude every day according to different sun heights per day is also common. The module is mounted in such a manner that the surface of the concentrating solar power module is parallel to the direction of the tilting axis, and the module is rotated about the tilting axis.

As a power system of the trailing drive system, there is a method of driving a gear at a specific rotation speed using a motor and a speed reducer to drive in a specific direction; or using a hydraulic pump and a hydraulic cylinder to adjust the cylinder to a specific one. The length, by which the method is driven in a specific direction; either method can be used.

As a control system (not shown) for controlling the operation of the trailing drive system, there is generally a method in which the concentrating solar battery module 1 is oriented in the direction of the sun by pre-calculating the orbit of the sun by a timepiece mounted inside the control system. The method of controlling the method; or installing a solar sensor including a photodiode or the like in the system to monitor the direction of the sun at any time for control; any method may be used.

Furthermore, all aspects of the embodiments disclosed herein are illustrative and not intended to be limiting. Therefore, the technical scope of the present invention is not limited to the above-described embodiments, but is defined based on the description of the scope of the patent application. In addition, all changes and meanings within the meaning and scope of the claims are included.

[Industrial availability]

The present invention relates to a concentrating solar cell module having an electrode wiring structure excellent in workability at the time of manufacture, a solar photovoltaic power generation system, and a method of manufacturing a concentrating solar cell module, and is more conducive to the overall solar power generation. .

1‧‧‧Light collecting solar battery module

10‧‧‧Module substrate

10a‧‧‧Locating pin

11‧‧‧Receiver substrate

12‧‧‧ Receiver base

12a‧‧‧Gap section

12b‧‧‧Positioning holes

13‧‧‧Wiring materials

13a‧‧‧Bend

14‧‧‧ positive electrode pad

15‧‧‧Negative electrode pad

16‧‧‧Wire

17‧‧‧Solar battery component mounting section

18‧‧‧Insulation

19‧‧‧1st insulation

20‧‧‧2nd insulation protection layer

25‧‧‧Wiring connecting materials

25a‧‧‧ positive electrode pad

25b‧‧‧Negative electrode pad

30‧‧‧ lens plate (optical member)

31‧‧‧Light collecting lens unit

50‧‧‧Frame

60‧‧‧Solar battery components

80‧‧‧ pedestal

81‧‧‧ Trailing drive system

W1‧‧‧ interval

Fig. 1 is a perspective view showing the overall configuration of an embodiment of a concentrating solar cell module of the present invention.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

Figure 3 is an enlarged cross-sectional view of a portion B of Figure 2.

Fig. 4 is a plan view showing the lens plate viewed from the lower surface side (the side opposite to the solar cell element).

Fig. 5 is a plan view showing the module substrate in a state where the lens plate is removed.

Fig. 6(a) is a plan view showing a configuration of one receiver substrate, (b) is a plan view showing a part of the figure (a) in an enlarged manner, and (c) is a part (b) of the figure (b). The plan view is further enlarged, (d) is a plan view showing an enlarged portion D of the figure (a), and (e) is a plan view showing an enlarged portion E of the figure (a).

Fig. 7 is an exploded perspective view showing a state in which a receiver substrate is mounted on a module substrate.

Fig. 8 is a cross-sectional view showing an electrode portion showing one step of a manufacturing step in the embodiment of the method of manufacturing the concentrating solar cell module of the present invention.

Fig. 9 is a schematic plan view showing a wiring connection structure of one end portion of an adjacent receiver substrate.

Figure 10 is a view showing the appearance of an embodiment of the solar power generation system of the present invention. A perspective view of the composition.

Fig. 11 is a plan view showing an example of a wiring structure of a module substrate in the prior solar cell module.

Figure 12 is a cross-sectional view taken along line G-G of Figure 11.

Figure 13 is a cross-sectional view of a prior collection solar cell.

10‧‧‧Module substrate

11‧‧‧Receiver substrate

13‧‧‧Wiring materials

25‧‧‧Wiring connecting materials

50‧‧‧Frame

60‧‧‧Solar battery components

W1‧‧‧ interval

Claims (12)

A concentrating solar cell module, comprising: a plurality of solar cell elements; and a long strip-shaped receiver substrate, wherein the solar cell elements are placed at a certain interval and arranged in a row; and a set substrate which is formed by placing a plurality of the receiver substrates at a predetermined interval and arranged in parallel; and the receiver substrate includes: a long receiver base; and a plurality of wiring materials, etc. The receiver base body is arranged in a row along the longitudinal direction in a state in which the end portions are opposed to each other; and a positive electrode pad portion is provided at one end of the wiring material, and a negative electrode pad portion is provided at the other end portion, and the positive electrode pad portion is provided The electrode pad portion and the negative electrode pad portion are connected to the positive electrode terminal and the negative electrode terminal of the solar cell element, respectively, to constitute a solar cell element mounting portion. The concentrating solar cell module of claim 1, wherein a curved portion is formed at a central portion in the longitudinal direction of the wiring material. The concentrating solar cell module according to claim 1 or 2, wherein a notch portion is formed in the receiver base with a predetermined interval in the longitudinal direction. The concentrating solar cell module of claim 1, wherein the plurality of receiver substrates are electrically connected to each other by a wiring connecting material. The concentrating solar cell module of claim 1, wherein a positioning mechanism for placing the receiver substrate at a specific position of the module substrate is provided. The concentrating solar cell module of claim 5, wherein the positioning mechanism comprises a positioning pin disposed on the module substrate and a positioning hole disposed on the receiver substrate. The concentrating solar cell module of claim 1, wherein a thermally conductive insulating layer is disposed between the receiver substrate and the wiring material. The concentrating solar cell module according to claim 1, wherein the wiring material is covered by the first insulating protective layer, and the positive electrode pad portion and the negative electrode of the wiring material are on the first insulating protective layer An opening for connection is provided in an upper portion of the pad portion. The concentrating solar cell module according to claim 8, wherein the first insulating protective layer has a transparent second insulating protective layer formed on the entire opening including the connecting opening. The concentrating solar cell module of claim 1, wherein an optical member is disposed above the module substrate, and the optical member includes a plurality of collecting lens portions that collect sunlight for each of the solar cell elements. A solar power generation system is characterized in that a plurality of concentrating solar cell modules according to any one of claims 1 to 10 are disposed on a pedestal, and each solar cell module is connected by a cable. A method of manufacturing a concentrating solar cell module, comprising the steps of: forming a positive electrode pad having a positive electrode pad portion at one end and a plurality of wiring materials having a negative electrode pad portion at another end portion Ministry and the above negative The electrode pad portion is opposed to each other, and is placed on the elongated receiver substrate in a row; the positive electrode terminal and the negative electrode terminal of the solar cell element are respectively connected to the positive electrode pad portion and the negative electrode pad portion, and the sun is a battery element is mounted on the positive electrode pad portion to form a receiver substrate; a plurality of the receiver substrates are placed on the module substrate at a predetermined interval, and the wiring is connected to the receiver substrate One end portion is electrically connected to each other; and an optical member including a plurality of collecting lenses that collect sunlight for each of the solar cell elements is disposed on the upper portion of the module substrate, and is integrally assembled by a frame.